Campaign war room veterans Karine Jean-Pierre, who worked on Obama 2012, and Robert Traynham who worked on Bush 2004, join Lawrence to take us inside Donald Trump's strategy to divide Democrats ahead of a potential 2016 general election matchup. watch

Trump gave a foreign policy speech but many experts call it ‘nonsense’ and ‘word salad.’ The GOP frontrunner says “America First" will be the basis for his foreign policy decisions, but what does that mean? Tom Nichols and Phyllis Bennis join Lawrence. watch

Given his past liberal positions, why are so many in conservative media like Rush Limbaugh, Sean Hannity, and Ann Coulter, seemingly fine with the new conservative version of Donald Trump? MSNBC's Lawrence O'Donnell talks to conservative radio host John Ziegler. watch

Republican presidential campaign veterans Ben Ginsberg and Stuart Stevens join MSNBC’s Lawrence O’Donnell in the Last Word campaign war room to discuss the implications of a Kasich-Cruz alliance for the Republican primary campaign. watch

Donald Trump responded to the new Cruz/Kasich alliance to block Trump from gaining more delegates. Trump called on Cruz and Kasich to drop out, saying it's time to unify the Republican Party. Lawrence discusses with Tim Miller, Scottie Nell Hughes and NBC watch

Prince produced 39 solo albums over a span of 37 years & the film "Purple Rain" grossed more than 80-million dollars and won an Academy award for Best Original Song Score. Brian Williams talks to music producer Rickey Minor for a look back at Prince’s legacy. watch

Prince's videos helped transform the burgeoning MTV network and paved the way for a generation of up-and-coming artists. MSNBC talks to the “Today Show’s” Carson Daly about his time as a host at MTV and how Prince influenced pop culture. watch

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Lawrence O’Donnell brings his extraordinary background in politics and entertainment to “The Last Word with Lawrence O’Donnell,” airing weeknights on MSNBC. Drawing upon his experience as a former chief of staff on the Senate Finance Committee and as an Emmy-winning executive producer and writer of “The West Wing,” O’Donnell gives the last word and rewrites the most compelling stories of the day.